Problem 1. = An electron with an initial speed vo 1.6 106 m/s enters into a uniform field between two plates as shown in figure. Assume that the field between the plates is directed vertically downward and that the field outside the plates is zero. The electron enters the field at a point midway between the plates. (a) If the electron just misses the upper plate as it emerges from the field, find the magnitude of the electric field. (b) Suppose that the electron is replaced by a proton with the same initial speed vo. Would the proton hit one of the plates? If not, what would be its displacement vector as it exits the region between the plates? K2.00 cm VO 1.00 cm 12